The City School
Academic Year 2021-2022
Subject Name: Physics (5054)
Syllabus Breakup Class 9
(First Term)
Topic
1.1 Physical
quantities and
measurement
techniques
Sub Topics
1 Scalars and vectors
2 Measurement
techniques
3 Units and symbols
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1.2 Motion
1 Speed, velocity and acceleration
2 Graphical analysis of
motion
3 Free-fall
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Learning Objectives
week
Describe how to measure a variety of
lengths with appropriate precision using
tapes, rulers and micrometers (including
reading the scale on an analogue
micrometer)
Describe how to use a measuring cylinder
to measure the volume of a liquid and to
determine the volume of a solid by
displacement
Describe how to measure a variety of time
intervals using clocks and digital timers
Determine an average value for a small
distance and for a short interval of time by
measuring multiples (including the period
of oscillation of a pendulum)
Understand that a scalar quantity has
magnitude (size) only and that a vector
quantity has magnitude and direction
Know that the following quantities are
scalars: distance, speed, time, mass,
energy and temperature
Know that the following quantities are
vectors: displacement, force, weight,
velocity, acceleration, momentum, electric
field strength and gravitational field
strength.
Determine, by calculation or graphically,
the resultant of two vectors at right angles
2 weeks
Define speed as distance travelled per unit
time and define velocity as change in
displacement per unit time
Recall and use the equation speed =
distance / time
Recall and use the equation
average speed =total distance
travelled/total time taken
Define acceleration as change in velocity
per unit time; recall and use the equation
4 weeks
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
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1.2 Motion
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1.3 Mass and
weight
1 Mass and weight
2 Gravitational fields
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acceleration = change in velocity / time
taken
State what is meant by, and describe
examples of, uniform acceleration and nonuniform acceleration
Know that a deceleration is a negative
acceleration and use this in calculations
Sketch, plot and interpret distance–time
and speed–time graphs
Determine from the shape of a distance–
time graph when an object is:
at rest
moving with constant speed
accelerating
decelerating
Determine from the shape of a speed–time
graph when an object is:
(a)at rest
(b) moving with constant speed
(c) moving with constant acceleration
moving with changing acceleration
State that the acceleration of free fall g for
an object near to the surface of the Earth is
approximately
constant and is approximately 9.8 m / s2
Calculate speed from the gradient of a
distance–time graph
Calculate the area under a speed–time
graph to determine the distance travelled
for motion with constant
speed or constant acceleration
Calculate acceleration from the gradient of
a speed–time graph
State that mass is a measure of the quantity
of matter in an object at rest relative to the
observer
State that the mass of an object resists
change from its state of rest or motion
(inertia)
Know that weights, and therefore masses,
may be compared using a beam balance or
equal-arm balance
Describe how to determine mass using an
electronic balance
Describe how to measure weight using a
force meter
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
1 week
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1.4 Density
1 Density of liquids
2 Density of solids
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1.5 Forces
1.5 Forces
1 Balanced and
unbalanced forces
Define gravitational field strength as force
per unit mass; recall and use the equation
gravitational field strength =weight / mass
and know that this is equivalent to the
acceleration of free fall
State that a gravitational field is a region in
which a mass experiences a force due to
gravitational attraction
Define density as mass per unit volume;
recall and use the equation
density = mass / volume
Describe how to determine the density of a
liquid, of a regularly shaped solid and of an
irregularly shaped
solid which sinks in a liquid (volume by
displacement), including appropriate
calculations
1 week
- Identify and use different types of force,
including weight (gravitational force),
friction, drag, air resistance,
- tension (elastic force), electrostatic force,
magnetic force, thrust (driving force) and
contact force
- Identify forces acting on an object and draw
free-body diagram(s) representing the
forces
- State Newton’s first law as ‘an object either
remains at rest or continues to move in a
straight line at
- constant speed unless acted on by a
resultant force’
- State that a force may change the velocity
of an object by changing its direction of
motion or its speed
- Determine the resultant of two or more
forces acting along the same straight line
- Recall and use the equation resultant force
= mass × acceleration
- State Newton’s third law as ‘when object A
exerts a force on object B, then object B
exerts an equal and opposite force on
object A’
- Know that Newton’s third law describes
pairs of forces of the same type acting on
different objects
1 week
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
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1 week
2 Friction
3 Elastic deformation
4 Circular motion
- Describe friction as a force that may
impede motion and produce heating
- Understand the motion of objects acted on
by a constant weight or driving force, with
and without drag (including air resistance
or resistance in a liquid)
- Explain how an object reaches terminal
velocity
- Define the thinking distance, braking
distance and stopping distance of a moving
vehicle
- Explain the factors that affect thinking and
braking distance including speed, tiredness,
alcohol, drugs, load, tyre surface and road
conditions
- Know that forces may produce a change in
size and shape of an object
- Define the spring constant as force per unit
extension; recall and use the equation
1 week
spring constant = force / extension
- Sketch, plot and interpret load–extension
graphs for an elastic solid and describe the
associated experimental procedures
- Define and use the term ‘limit of
proportionality’ for a load–extension graph
and identify this point on the graph (an
understanding of the elastic limit is not
required)
- 1 Describe, qualitatively, motion in a
circular path due to a force perpendicular
to the motion as:
- speed increases if force increases, with
mass and radius constant
- radius decreases if force increases, with
mass and speed constant
- an increased mass requires an increased
force to keep speed and radius constant
- ( F = mv2 / r is not required)
Revision
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
1 week
2 weeks
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(Second Term)
Topic
1.5 Forces
continued
Sub Topics
5 Turning effect of
forces
Learning Objectives
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6 Centre of gravity
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1.6 Momentum
1 Linear momentum
2 Law of
conservation of
momentum
3 Impulse
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week
Describe the moment of a force as a measure
2 weeks
of its turning effect and give everyday
examples
Define the moment of a force as moment =
force × perpendicular distance from the pivot;
recall and use this equation
State and use the principle of moments for an
object in equilibrium
Describe an experiment to verify the principle
of moments
State what is meant by centre of gravity
1 week
Describe how to determine the position of the
centre of gravity of a plane lamina using a
plumb line
Describe, qualitatively, the effect of the
position of the centre of gravity on the stability
of simple objects
Define momentum as mass × velocity; recall
and use the equation p = mv
Define impulse as force × time for which force
acts; recall and use the equation impulse = F
Δt = Δ(mv)
Apply the principle of the conservation of
momentum to solve simple problems in one
dimension
Define resultant force as the change in
momentum per unit time; recall and use the
equation
resultant force = change in momentum / time
taken
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
1 week
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1.7 Energy,
work and
power
1 Energy
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Recall and use the equation
work done = force × distance moved in the
direction of the force
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List renewable and non-renewable energy
sources
Describe how useful energy may be obtained,
or electrical power generated, from:
(a) chemical energy stored in fossil fuels
(b) chemical energy stored in biofuels
(c) hydroelectric resources
(d) solar radiation
(e) nuclear fuel
(f) geothermal resources
(g) wind
(h) tides
(i) waves in the sea
including references to a boiler, turbine and
generator where they are used
Describe advantages and disadvantages of
each method limited to whether it is
renewable, when and
whether it is available, and its impact on the
environment
2 Work
3 Energy resources
State that energy may be stored as kinetic,
gravitational potential, chemical, elastic
(strain), nuclear, electrostatic and internal
(thermal)
Describe how energy is transferred between
stores during events and processes, including
examples of transfer by forces (mechanical
work done), electrical currents (electrical work
done), heating, and by electromagnetic, sound
and other waves
Know the principle of the conservation of
energy and apply this principle to the transfer
of energy between stores during events and
processes
Recall and use the equation for kinetic energy
Ek = 1/2 mv2
Recall and use the equation for the change in
gravitational potential energy ΔEp = mgΔh
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The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
2 weeks
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Define efficiency as:
(%) efficiency = {(useful energy output)
/(total energy input)} ( ×100%)
(%) efficiency ={(useful power output)/ (total
power input)} ( × 100%)
and recall and use these equations
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Define power as work done per unit time
and also as energy transferred per unit time;
recall and use the equations
power =work done/ time taken
4 Efficiency
5 Power
power = energy transferred / time taken
1.8 Pressure
1 Pressure
2 Pressure changes
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2.1 Kinetic
particle model
of matter
1 States of matter
Define pressure as force per unit area; recall
and use the equation
pressure = force / area
Describe how pressure varies with force and
area in the context of everyday examples
State that the pressure at a surface produces a
force in a direction at right angles to the
surface and describe an experiment to show
this
Describe how the height of a liquid column in
a liquid barometer may be used to determine
the atmospheric pressure
Describe, quantitatively, how the pressure
beneath the surface of a liquid changes with
depth and density of the liquid
Recall and use the equation for the change in
pressure beneath the surface of a liquid
change in pressure = density × gravitational
field strength × change in height
- Know the distinguishing properties of
solids, liquids and gases
- Know the terms for the changes in state
between solids, liquids and gases (gas to
solid and solid to gas transfers are not
required)
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
3 weeks
2 weeks
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2 Particle model
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2.3 Transfer of
thermal energy
1 Conduction
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2.3 Transfer of
thermal energy
2 Convection
Describe, qualitatively, the particle structure
of solids, liquids and gases, relating their
properties to the forces and distances
between particles and to the motion of the
particles (atoms, molecules, ions and
electrons)
2 Describe the relationship between the
motion of particles and temperature, including
the idea that there is a lowest possible
temperature (-273 °C), known as absolute
zero, where the particles have least kinetic
energy
3 Describe the pressure and the changes in
pressure of a gas in terms of the forces
exerted by particles colliding with surfaces,
creating a force per unit area
Explain qualitatively, in terms of particles, the
relationship between:
o pressure and temperature at
constant volume
o volume and temperature at
constant pressure
o pressure and volume at constant
temperature
Recall and use the equation p1 V1 = p2V2,
including a graphical representation of the
relationship between pressure and volume for
a gas at constant temperature
Describe experiments to distinguish between
good and bad thermal conductors
Describe thermal conduction in all solids in
terms of atomic or molecular lattice vibrations
and also in terms of the movement of free
(delocalized) electrons in metallic conductors
3 weeks
Explain convection in liquids and gases in
terms of density changes and describe
experiments to illustrate convection
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
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3 Radiation
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4 Consequences of
thermal energy
transfer
Describe the process of thermal energy
transfer by infrared radiation and know that it
does not require a medium
Describe the effect of surface colour (black or
white) and texture (dull or shiny) on the
emission, absorption and reflection of infrared
radiation
Describe how the rate of emission of radiation
depends on the surface temperature and
surface area of an object
Describe experiments to distinguish between
good and bad emitters of infrared radiation
Describe experiments to distinguish between
good and bad absorbers of infrared radiation
Explain everyday applications using ideas
about conduction, convection and radiation,
including:
(a) heating objects such as kitchen pans
(b) heating a room by convection
(c) measuring temperature using an infrared
thermometer
(d) using thermal insulation to maintain the
temperature of a liquid and to reduce
thermal energy transfer in buildings
Revision
The City School / O Level Syllabus Break up / AY 2021-22 / Physics / Class 9
2 weeks
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